Geographical Discrimination of Honeysuckle (Lonicera japonica Thunb.) from China by Characterization of the Stable Isotope Ratio and Multielemental Analysis
文献类型： 外文期刊
作者： Fan, Lixia 1 ; Chen, Lu 1 ; Ding, Ruiyan 1 ; Wang, Lei 1 ; Zhang, Bingchun 1 ;
作者机构： 1.Shandong Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, 202 Gongye North Rd, Jinan 250100, Shandong, Peoples R China
2.Shandong Prov Key Lab Test Technol Food Qual & Sa, Jinan, Shandong, Peoples R China
3.Shandong Prov Key Lab Test Technol Food
关键词： Honeysuckle; inductively coupled plasma mass spectrometry (ICP-MS); inductively coupled plasma optical emission spectrometry (ICP-OES); isotope ratio mass spectrometry (IRMS); linear discrimination analysis (LDA)
期刊名称：ANALYTICAL LETTERS （ 影响因子：2.329； 五年影响因子：1.738 ）
ISSN： 0003-2719
年卷期： 2018 年 51 卷 16 期
页码：
收录情况： SCI
摘要： A total of 117 honeysuckle (Lonicera japonica Thunb.) samples from four major regions of production in China, including Fengqiu in Henan, Pingyi in Shandong, Julu in Hebei, and Xiushan in Chongqing, were analyzed to determine their geographical origin. C-13, N-15, and O-18 values were determined by isotope ratio mass spectrometry (IRMS), and the contents of 18 elements (Fe, Mn, Cu, Zn, K, Ca, Mg, Pb, Cd, Cr, As, Hg, Se, Sr, Ni, Co, B, and Mo) were measured by inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS). Multivariate statistical analysis by analysis of variance (ANOVA), principal component analysis (PCA), and linear discriminant analysis (LDA) were performed. The results showed that there were very significant differences in the stable isotope ratios and elemental concentrations in honeysuckle based on geographical origin, with plants from each region having a unique fingerprint. Discriminant functions were established to distinguish the origin of honeysuckle using suitable indicators including Cd, Cr, As, Hg, Se, Co, Ni, Sr, Fe, C-13, N-15, and O-18. Cross-validated cases of 95.7% were correctly classified.
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